// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == 'object' && typeof module == 'object')
    // CommonJS
    mod(require('../../lib/codemirror'));
  else if (typeof define == 'function' && define.amd)
    // AMD
    define(['../../lib/codemirror'], mod);
  // Plain browser env
  else mod(CodeMirror);
})(function(CodeMirror) {
  'use strict';

  CodeMirror.defineMode('nginx', function(config) {
    function words(str) {
      var obj = {},
        words = str.split(' ');
      for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
      return obj;
    }

    var keywords = words(
      /* ngxDirectiveControl */ 'break return rewrite set' +
        /* ngxDirective */ ' accept_mutex accept_mutex_delay access_log add_after_body add_before_body add_header addition_types aio alias allow ancient_browser ancient_browser_value auth_basic auth_basic_user_file auth_http auth_http_header auth_http_timeout autoindex autoindex_exact_size autoindex_localtime charset charset_types client_body_buffer_size client_body_in_file_only client_body_in_single_buffer client_body_temp_path client_body_timeout client_header_buffer_size client_header_timeout client_max_body_size connection_pool_size create_full_put_path daemon dav_access dav_methods debug_connection debug_points default_type degradation degrade deny devpoll_changes devpoll_events directio directio_alignment empty_gif env epoll_events error_log eventport_events expires fastcgi_bind fastcgi_buffer_size fastcgi_buffers fastcgi_busy_buffers_size fastcgi_cache fastcgi_cache_key fastcgi_cache_methods fastcgi_cache_min_uses fastcgi_cache_path fastcgi_cache_use_stale fastcgi_cache_valid fastcgi_catch_stderr fastcgi_connect_timeout fastcgi_hide_header fastcgi_ignore_client_abort fastcgi_ignore_headers fastcgi_index fastcgi_intercept_errors fastcgi_max_temp_file_size fastcgi_next_upstream fastcgi_param fastcgi_pass_header fastcgi_pass_request_body fastcgi_pass_request_headers fastcgi_read_timeout fastcgi_send_lowat fastcgi_send_timeout fastcgi_split_path_info fastcgi_store fastcgi_store_access fastcgi_temp_file_write_size fastcgi_temp_path fastcgi_upstream_fail_timeout fastcgi_upstream_max_fails flv geoip_city geoip_country google_perftools_profiles gzip gzip_buffers gzip_comp_level gzip_disable gzip_hash gzip_http_version gzip_min_length gzip_no_buffer gzip_proxied gzip_static gzip_types gzip_vary gzip_window if_modified_since ignore_invalid_headers image_filter image_filter_buffer image_filter_jpeg_quality image_filter_transparency imap_auth imap_capabilities imap_client_buffer index ip_hash keepalive_requests keepalive_timeout kqueue_changes kqueue_events large_client_header_buffers limit_conn limit_conn_log_level limit_rate limit_rate_after limit_req limit_req_log_level limit_req_zone limit_zone lingering_time lingering_timeout lock_file log_format log_not_found log_subrequest map_hash_bucket_size map_hash_max_size master_process memcached_bind memcached_buffer_size memcached_connect_timeout memcached_next_upstream memcached_read_timeout memcached_send_timeout memcached_upstream_fail_timeout memcached_upstream_max_fails merge_slashes min_delete_depth modern_browser modern_browser_value msie_padding msie_refresh multi_accept open_file_cache open_file_cache_errors open_file_cache_events open_file_cache_min_uses open_file_cache_valid open_log_file_cache output_buffers override_charset perl perl_modules perl_require perl_set pid pop3_auth pop3_capabilities port_in_redirect postpone_gzipping postpone_output protocol proxy proxy_bind proxy_buffer proxy_buffer_size proxy_buffering proxy_buffers proxy_busy_buffers_size proxy_cache proxy_cache_key proxy_cache_methods proxy_cache_min_uses proxy_cache_path proxy_cache_use_stale proxy_cache_valid proxy_connect_timeout proxy_headers_hash_bucket_size proxy_headers_hash_max_size proxy_hide_header proxy_ignore_client_abort proxy_ignore_headers proxy_intercept_errors proxy_max_temp_file_size proxy_method proxy_next_upstream proxy_pass_error_message proxy_pass_header proxy_pass_request_body proxy_pass_request_headers proxy_read_timeout proxy_redirect proxy_send_lowat proxy_send_timeout proxy_set_body proxy_set_header proxy_ssl_session_reuse proxy_store proxy_store_access proxy_temp_file_write_size proxy_temp_path proxy_timeout proxy_upstream_fail_timeout proxy_upstream_max_fails random_index read_ahead real_ip_header recursive_error_pages request_pool_size reset_timedout_connection resolver resolver_timeout rewrite_log rtsig_overflow_events rtsig_overflow_test rtsig_overflow_threshold rtsig_signo satisfy secure_link_secret send_lowat send_timeout sendfile sendfile_max_chunk server_name_in_redirect server_names_hash_bucket_size server_names_hash_max_size server_tokens set_real_ip_from smtp_auth smtp_capabilities smtp_client_buffer smtp_greeting_delay so_keepalive source_charset ssi ssi_ignore_recycled_buffers ssi_min_file_chunk ssi_silent_errors ssi_types ssi_value_length ssl ssl_certificate ssl_certificate_key ssl_ciphers ssl_client_certificate ssl_crl ssl_dhparam ssl_engine ssl_prefer_server_ciphers ssl_protocols ssl_session_cache ssl_session_timeout ssl_verify_client ssl_verify_depth starttls stub_status sub_filter sub_filter_once sub_filter_types tcp_nodelay tcp_nopush thread_stack_size timeout timer_resolution types_hash_bucket_size types_hash_max_size underscores_in_headers uninitialized_variable_warn use user userid userid_domain userid_expires userid_mark userid_name userid_p3p userid_path userid_service valid_referers variables_hash_bucket_size variables_hash_max_size worker_connections worker_cpu_affinity worker_priority worker_processes worker_rlimit_core worker_rlimit_nofile worker_rlimit_sigpending worker_threads working_directory xclient xml_entities xslt_stylesheet xslt_typesdrew@li229-23',
    );

    var keywords_block = words(
      /* ngxDirectiveBlock */ 'http mail events server types location upstream charset_map limit_except if geo map',
    );

    var keywords_important = words(
      /* ngxDirectiveImportant */ 'include root server server_name listen internal proxy_pass memcached_pass fastcgi_pass try_files',
    );

    var indentUnit = config.indentUnit,
      type;
    function ret(style, tp) {
      type = tp;
      return style;
    }

    function tokenBase(stream, state) {
      stream.eatWhile(/[\w\$_]/);

      var cur = stream.current();

      if (keywords.propertyIsEnumerable(cur)) {
        return 'keyword';
      } else if (keywords_block.propertyIsEnumerable(cur)) {
        return 'variable-2';
      } else if (keywords_important.propertyIsEnumerable(cur)) {
        return 'string-2';
      }
      /**/

      var ch = stream.next();
      if (ch == '@') {
        stream.eatWhile(/[\w\\\-]/);
        return ret('meta', stream.current());
      } else if (ch == '/' && stream.eat('*')) {
        state.tokenize = tokenCComment;
        return tokenCComment(stream, state);
      } else if (ch == '<' && stream.eat('!')) {
        state.tokenize = tokenSGMLComment;
        return tokenSGMLComment(stream, state);
      } else if (ch == '=') ret(null, 'compare');
      else if ((ch == '~' || ch == '|') && stream.eat('='))
        return ret(null, 'compare');
      else if (ch == '"' || ch == "'") {
        state.tokenize = tokenString(ch);
        return state.tokenize(stream, state);
      } else if (ch == '#') {
        stream.skipToEnd();
        return ret('comment', 'comment');
      } else if (ch == '!') {
        stream.match(/^\s*\w*/);
        return ret('keyword', 'important');
      } else if (/\d/.test(ch)) {
        stream.eatWhile(/[\w.%]/);
        return ret('number', 'unit');
      } else if (/[,.+>*\/]/.test(ch)) {
        return ret(null, 'select-op');
      } else if (/[;{}:\[\]]/.test(ch)) {
        return ret(null, ch);
      } else {
        stream.eatWhile(/[\w\\\-]/);
        return ret('variable', 'variable');
      }
    }

    function tokenCComment(stream, state) {
      var maybeEnd = false,
        ch;
      while ((ch = stream.next()) != null) {
        if (maybeEnd && ch == '/') {
          state.tokenize = tokenBase;
          break;
        }
        maybeEnd = ch == '*';
      }
      return ret('comment', 'comment');
    }

    function tokenSGMLComment(stream, state) {
      var dashes = 0,
        ch;
      while ((ch = stream.next()) != null) {
        if (dashes >= 2 && ch == '>') {
          state.tokenize = tokenBase;
          break;
        }
        dashes = ch == '-' ? dashes + 1 : 0;
      }
      return ret('comment', 'comment');
    }

    function tokenString(quote) {
      return function(stream, state) {
        var escaped = false,
          ch;
        while ((ch = stream.next()) != null) {
          if (ch == quote && !escaped) break;
          escaped = !escaped && ch == '\\';
        }
        if (!escaped) state.tokenize = tokenBase;
        return ret('string', 'string');
      };
    }

    return {
      startState: function(base) {
        return { tokenize: tokenBase, baseIndent: base || 0, stack: [] };
      },

      token: function(stream, state) {
        if (stream.eatSpace()) return null;
        type = null;
        var style = state.tokenize(stream, state);

        var context = state.stack[state.stack.length - 1];
        if (type == 'hash' && context == 'rule') style = 'atom';
        else if (style == 'variable') {
          if (context == 'rule') style = 'number';
          else if (!context || context == '@media{') style = 'tag';
        }

        if (context == 'rule' && /^[\{\};]$/.test(type)) state.stack.pop();
        if (type == '{') {
          if (context == '@media')
            state.stack[state.stack.length - 1] = '@media{';
          else state.stack.push('{');
        } else if (type == '}') state.stack.pop();
        else if (type == '@media') state.stack.push('@media');
        else if (context == '{' && type != 'comment') state.stack.push('rule');
        return style;
      },

      indent: function(state, textAfter) {
        var n = state.stack.length;
        if (/^\}/.test(textAfter))
          n -= state.stack[state.stack.length - 1] == 'rule' ? 2 : 1;
        return state.baseIndent + n * indentUnit;
      },

      electricChars: '}',
    };
  });

  CodeMirror.defineMIME('text/x-nginx-conf', 'nginx');
});
